3o8 



I^IALACEAE. 



Vol. II. 



33. Crataegus Stonei Sargent. Stone's Thorn. 

 i'cck's Thorn. Fig. 2367. 



Crataegus Stonei Sarg. Rhodora 5: 62. 1903. 

 Crataegus I'cckii Sarg. Rhodora 5: 63. 1903. 



An intricately branched shrub, sometimes 7 high, 

 armed with spines i'-2' long. Leaves oblong to oblong- 

 ovate, I'-Z long, li'-2i' wide, serrate or doubly ser- 

 rate with acute or acuminate lobes toward the apex, 

 acute at the apex, cuneate, yellow-green and scabrate 

 above, slightly pubescent along the veins beneath ; 

 corymbs few-flowered, villous ; flowers 7"-io" broad ; 

 stamens about 10; anthers pink; styles and nutlets 3 

 or 4 ; fruit pyriform to short-ellipsoid, 6" or 7" thick, 

 light yellow or yellow-green tinged with red, slightly 

 villous ; flesh hard at maturity. 



Rocky places, central Massachusetts. Connecticut and 

 eastern New York. May ; fruit ripe October. 



34. Crataegus padifolia Sargent. Padus- 

 leaved Thorn. Fig. 2368. 



C. padifolia Sarg. Trees 

 1908, 



Shrubs 2 : -5. />/. 135. 



A shrubby tree, sometimes 20 high, with erect 

 and spreading branches forming an open crown. 

 Leaves elliptic-ovate to ovate, -2l' long, >'-2' 

 wide, acute at the apex, cuneate or rounded at 

 the base, coarsely serrate or doubly serrate, 

 glabrous, membranous, light yellow-green above ; 

 corymbs glabrous ; flowers 7"-9" broad ; stamens 

 about 10, the anthers pink; Calyx-lobes ovate, 

 acute, slightly glandular ; styles and nutlets 2 or 

 3 ; fruit short-ellipsoid to depressed-globose, 

 slightly angled, orange-red, 6" or 7" thick ; 

 calyx-tube but slightly enlarged, the lobes small, 

 spreading, deciduous ; flesh thin, hard, dry. 



Upland woods, southern Missouri. April ; fruit 

 ripe September-October. ' 



35. Crataegus populifolia Walter. Poplar-leaved Haw. Fig. 2369. 



Crataegus populifolia Walt. Fl. Car. 147. i;88. 



A shrub or small tree, about 15 high, with ascending 

 and spreading branches forming a round crown. Spines 

 slender, ^'-2' long; leaves deltoid-ovate or oblong-ovate. 

 -2h' long, r'-2' wide, serrate or doubly serrate with 

 acute lobes, acute at the apex, truncate or cordate at the 

 base, membranous, yellow-green above, paler beneath, 

 usually glabrous, sometimes slightly appressed-pubescent 

 above ; petioles slender, }'-f '. glandular ; corymbs few- 

 flowered, glabrous (flowers not known) ; fruit globose. 

 4"-6" thick, light red, without angles ; styles and nut- 

 lets 4 or 5 ; stamens about 10; calyx-lobes ovate-lanceo- 

 late, slightly toothed, appressed, usually deciduous ; flesh 

 hard at maturity. 



Virginia to South Carolina. Fruit ripe in September. 



